Classical hidden memory can pass a causal-break test

All carrier states in this example can remain diagonal. The example supplies no nonclassical environmental resource.

A classical persistent register can produce a carrier-only causal-break witness. This is the refusal already illustrated by Psy03-B's separately defined scar-register pilot CheungPsy03B. Psy03-C similarly notes that carrier contraction does not erase a distinct persistent register distribution CheungPsy03C.

Operational history dependence requires multitime intervention records; it is not settled by a one-time channel or one distinguishability curve PollockMarkov,PollockProcess.